3inch/ 75mm PDC core drill bit

pdc core drilling bit pdc core bit About Us We are a professional manufacturer specialized in series of drill tools: PDC core drill bits, PDC drill bits, diamond drill bits, PDC, etc. We can also produce other products according to the customers requirements. We sincerely welcome our friend both home and abroad to come for business talks. About Products Name PDC core bit Brand Drills-King Size ¢28mm~¢300mm Application geological exploration, coalfield mining,water well